Internal mix air spray nozzle for spraying fluent materials

(19)

(11)

EP 0 813 909 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	10.03.1999 Bulletin 1999/10

(43)	Date of publication A2:
	29.12.1997 Bulletin 1997/52

(21)	Application number: 97420094.1

(22)	Date of filing: 18.06.1997

(51)	International Patent Classification (IPC)⁶: B05B 7/32, B05B 1/02

(84)	Designated Contracting States:
	AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30)

Priority:

18.06.1996 US 666608

(71)	Applicant: Binks Sames Corporation
	Franklin Park, Illinois 60131-2887 (US)

(72)	Inventor:
	Scotchmur, Ronald R. Schiller Park, Illinois 60176 (US)

(74)	Representative: Myon, Gérard Jean-Pierre et al
	Cabinet Lavoix Lyon 62, rue de Bonnel 69448 Lyon Cedex 03 69448 Lyon Cedex 03 (FR)

(54)	Internal mix air spray nozzle for spraying fluent materials

(57) An internal mix air spray nozzle (90) for spraying fluent materials is comprised of a unitary one piece body (100) having a fluid material delivery bord extending therethrough and defining an air and fluid mixing chamber (122), a spray orifice (92) at the downstream end of the chamber, and a plurality of circumferentially spaced air orifices (126) inclined in the downstream direction into the chamber for introducing air into the fluid material and for causing the material to be emitted from the orifice as an atomized spray. The fluid supply passage, the air supply passages (126), the spray orifice (92) and the pressures of the air and fluid are correlated to produce a properly atomized spray of uniform spray density especially well suited for the spraying of heavily leaden and viscous materials such as stucco and the like.

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